CN206376979U - A kind of blade attack angle changing device used for wind power generation - Google Patents

Abstract

The utility model provides a kind of blade attack angle changing device used for wind power generation, it is related to technical field of wind power generation, during its first cam disc and the rotation of the second cam disc box haul rudder, the roller being arranged in roller movement groove can drive push rod to be moved along the axis direction of horizontal support bar, and then drive blade clips and blade clips linking arm to be rotated around the outer end of horizontal support bar by push rod and claw；Because blade and blade clips are fixed by screws in together, and then blade is rotated with blade clips around the outer end of horizontal support bar, and then the angle between the blade string of a musical instrument and relative wind velocity constantly changes, i.e. the attack angle of blade box haul of the blade attack angle changing device used for wind power generation of the utility model embodiment changes and changed, realize the real-time regulation of attack angle of blade box haul, improve the energy transformation ratio of wind power generation plant, and in high wind speed, the rotary speed of blade is reduced by changing its attack angle of blade, the stability of wind power generation plant is improved.

Description

A kind of blade attack angle changing device used for wind power generation

Technical field

The present invention relates to technical field of wind power generation, more particularly to a kind of blade attack angle changing device used for wind power generation.

Background technology

With developing rapidly for global economy, the fossil fuel such as substantial amounts of coal, oil and natural gas is consumed so that complete Sphere faces unprecedented energy crisis and environmental threat, and the energy and environmental protection have become significant problem urgently to be resolved hurrily at present. And wind energy is as the reproducible green clean energy resource of one kind, increasing people recognizes to develop the importance of wind energy.

In prior art, wind power generation plant mainly includes resistance and lift-type, wherein, lift-type wind power generation plant Include horizontal axis wind generating device and wind power generating set with vertical shaft again.Wind power generating set with vertical shaft relative level axle wind-force TRT has the following advantages that：1st, the noise of wind power generating set with vertical shaft is extremely low, and safe, will not injure in-flight Birds；2nd, it is special to wind apparatus not need, and can receive the wind-force of any direction, the influence of wind direction is smaller；3rd, vertical axis The pylon of wind power generation plant is low, and load-carrying properties are high and regular maintenance is convenient；4th, wind power generating set with vertical shaft need not be set Heavy gear-box and cabin, with the higher stability of a system and less cost；5th, the leaf of wind power generating set with vertical shaft Piece manufacturing process is simple and has higher by force intensity, its service life length, stability height.

But, inventor has found wind power generating set with vertical shaft because it is difficult to reality during prior art is realized The real-time regulation of existing attack angle of blade box haul, causes its energy transformation ratio extremely low, and in high wind speed, because its blade is rotated through Cause coupled generating equipment to be easily damaged soon, just because of above-mentioned reason, cause wind power generating set with vertical shaft not have Have and promoted the use of on a large scale, therefore, above mentioned problem have become restriction wind power generating set with vertical shaft promote the use of it is important Factor, becomes people's technical barrier urgently to be resolved hurrily.

The content of the invention

The present invention provides a kind of blade attack angle changing device used for wind power generation, it is intended to realize the real-time tune of attack angle of blade box haul Section, improves the energy transformation ratio and security reliability of wind power generation plant, contributes to the further of wind power generating set with vertical shaft Promote.

To reach above-mentioned purpose, the present invention provides a kind of blade attack angle changing device used for wind power generation, described used for wind power generation Blade attack angle changing device includes blade, blade and becomes angle of attack main body and become angle of attack main body for the blade to be fixed on into the blade On blade fixing device, the blade fixing device include blade support device, for the blade to be fixed on into the leaf Blade clips in piece support meanss, the blade support device includes blade clips linking arm, horizontal support bar, push rod peace Shelve, push rod, push rod and claw, the blade clips are connected with the blade clips linking arm, the blade clips Linking arm is hinged with the horizontal support bar, and the push rod mounting bracket is fixed on the horizontal support bar, and the push rod is pushed away with described Bar is connected, and the other end of the push rod is hinged with the blade clips by the claw；The blade becomes angle of attack main body Including end cap, the first cam disc, blade erection support, roller movement groove, rotary shaft upper bearing (metal), rotary shaft, cam brace rod, Rotary shaft lower bearing, the second cam disc, roller and mounting seat, the rotary shaft are arranged in the mounting seat, described turn Moving axis lower bearing is arranged on the lower end of the rotary shaft, and the rotary shaft lower bearing is arranged on the centre bore of second cam disc Interior, the lower end of the cam brace rod is fixed on second cam disc, and the upper end of the cam brace rod is fixed on institute The first cam disc is stated, the rotary shaft upper bearing (metal) is arranged in the centre bore of first cam disc, the upper end of the rotary shaft In the centre bore for being arranged on the rotary shaft upper bearing (metal), the blade support device is fixed on the blade erection support；Institute State the first cam disc with the upper end of the blade by the blade fixing device to be connected, second cam disc and the leaf The lower end of piece is connected by the blade fixing device, and first cam disc is identical with the structure of second cam disc, First cam disc and second cam disc are symmetrically installed, and are respectively provided with first cam disc and second cam disc Have and the roller is provided with roller movement groove described in profile identical, the roller movement groove, the roller and the push rod Connection.

Optionally, the blade attack angle changing device used for wind power generation also includes wind direction rudder, and the wind direction rudder is fixed on described On first cam disc, the upper end of the cam brace rod is just consolidated with first cam disc to the surface of the roller movement groove Company is just being fixed in fixed connection, the lower end of the cam brace rod with second cam disc to the surface of the roller movement groove Connect, first cam disc and second cam disc synchronous axial system under the driving of the wind direction rudder.

Optionally, the end cap is arranged on the blade erection support, first cam disc and second cam Disk under the driving of the wind direction rudder, can around the rotary shaft central axis synchronous rotary.

Optionally, the horizontal support bar includes horizontal support bar fixed part, horizontal support bar main body, the connection of support arm blade clips Arm connecting portion and the neck for installing straight-arm blade clips linking arm, the horizontal support bar fixed part are hollow structure, institute State the one end of straight-arm blade clips linking arm away from blade to be plugged in the neck, the blade clips linking arm and institute Blade clips linking arm connecting portion is stated to be hinged by the first fixing bolt.

Optionally, horizontal support bar mounting hole, push rod mounting hole and fixation through hole are provided with the push rod mounting bracket, The horizontal support bar is fixed in the horizontal support bar mounting hole, and the diameter of the horizontal support bar mounting hole is less than the support directly The diameter of bar main body, the push rod is arranged in the push rod mounting hole, and the diameter of the push rod is less than the push rod mounting hole Diameter.

Optionally, the roller and the push rod be by pin-hinges, the push rod with the push rod by pin-hinges, The push rod can be moved along the axis direction of the horizontal support bar.

Optionally, the wind direction rudder is slab construction, and the axis of the wind direction rudder and the axis of the rotary shaft exist all the time In one plane, the wind direction rudder is welded on first cam disc.

Optionally, the claw is U-shape structure, and one end of the claw and the push rod are by pin-hinges, the card The U-shaped inner surface of pawl is in contact with the outer surface of the blade clips linking arm, and the U-shaped inner surface is fixed with the blade Hoop linking arm passes through rivet.

Optionally, the blade is fixed with the blade clips by screw, the horizontal support bar fixed part with it is described Blade erection support is fixed by the second fixing bolt.

Optionally, the blade attack angle changing device used for wind power generation includes 5 blades, 10 blades fixation dresses Put and be uniformly arranged with 3 cam brace rods, center line of the blade along the rotary shaft, the cam brace rod is along institute The center line for stating rotary shaft is uniformly arranged, and the blade fixing device is respectively at the upper end of the blade and the lower end of the blade Connection.

The blade attack angle changing device used for wind power generation of the embodiment of the present invention, when wind is to its wind direction rudder, wind direction rudder can be with Wind direction constantly to swing, until wind direction rudder is in downwind position, and maintain in the case where wind direction does not change one Metastable position；During wind direction rudder is swung along wind direction, wind direction rudder can drive the first coupled cam disc Rotate, during the first cam disc box haul rudder is rotated, the first cam disc drives the second cam by cam brace rod Disk synchronous axial system；During the first cam disc and the rotation of the second cam disc, the roller in roller movement groove is arranged at this Rolled in roller movement groove, because the distance that point different on roller movement groove relatively rotates shaft centre line is differed, cause rolling During son is rotated in roller movement groove, roller drives axis direction of the push rod along horizontal support bar to be transported in push rod mounting hole It is dynamic, and then the claw being hinged by the push rod and push rod that are hinged with push rod drives blade clips and blade clips linking arm Rotated around the outer end of horizontal support bar；Because blade and blade clips are fixed by screws in together, and then blade is with blade Clips are rotated around the outer end of horizontal support bar, and then the angle between blade string of a musical instrument relative wind velocity constantly changes, i.e., originally The attack angle of blade box haul of the blade attack angle changing device used for wind power generation of inventive embodiments changes and changed, and realizes attack angle of blade The real-time regulation of box haul, improves the energy transformation ratio of wind power generation plant, and in high wind speed, is attacked by changing its blade Angle reduces the rotary speed of blade, improves the stability of wind power generation plant, is conducive to wind power generating set with vertical shaft Promote the use of on a large scale.

Simultaneously as the blade attack angle changing device used for wind power generation of the embodiment of the present invention, is provided with two symmetrically peaces The cam disc of structure identical first and the second cam disc of dress, and the first cam disc and the second cam disc connected by cam disc Bar is fixed together, and realizes the synchronous axial system in the case where wind direction rudder straps are dynamic of the first cam disc and the second cam disc, and then passes through In the presence of the roller, push rod and the push rod that are connected respectively with the first cam disc and the second cam disc, at the same change blade upper end and The angle of attack of lower end, the i.e. embodiment of the present invention are adjusted simultaneously by the cam disc of symmetrical arrangement identical first and the second cam disc The angle of attack of completeblade top and bottom, improves the structural stability and reliability during adjustment attack angle of blade, while also protecting The accuracy demonstrate,proved the attack angle of blade box haul change of the blade attack angle changing device used for wind power generation of the embodiment of the present invention and changed, The further energy transformation ratio and structural reliability for improving wind power generation plant.

Brief description of the drawings

In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also To obtain other accompanying drawings according to these accompanying drawings.

Fig. 1 is the overall structure figure of blade attack angle changing device used for wind power generation provided in an embodiment of the present invention；

Fig. 2 is the assembly structure figure of blade attack angle changing device used for wind power generation provided in an embodiment of the present invention；

Fig. 3 is the structural representation at the first cam disc provided in an embodiment of the present invention；

Fig. 4 is the structural representation at horizontal support bar provided in an embodiment of the present invention；

Fig. 5 is the structural representation of horizontal support bar provided in an embodiment of the present invention；

Fig. 6 is the structural representation of push rod mounting bracket provided in an embodiment of the present invention；

Fig. 7 is the structural representation of claw provided in an embodiment of the present invention；

Fig. 8 is the structural representation of the first cam disc provided in an embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made Embodiment, belongs to the scope of protection of the invention.

Term " first ", " second ", " the 3rd " in description and claims of this specification and above-mentioned accompanying drawing, " Four ", the (if present) such as " the 5th ", " the 6th ", " the 7th " and " the 8th " is for distinguishing similar object, without for retouching State specific order or precedence.It should be appreciated that the data so used can be exchanged in the appropriate case, to retouch here The embodiments of the invention stated can for example be implemented with the order in addition to those for illustrating or describing herein.

In addition, term " comprising " and " having " and their any deformation, it is intended that covering is non-exclusive to be included, example Such as, process, method, system, product or the equipment for containing series of steps or unit are not necessarily limited to those clearly listed Step or unit, but may include not list clearly or for intrinsic other of these processes, method, product or equipment Step or unit.

The blade attack angle changing device used for wind power generation of the embodiment of the present invention, belongs to technical field of wind power generation, for realizing The real-time regulation of attack angle of blade box haul, improve wind power generation plant energy transformation ratio and security reliability, when wind to its During wind direction rudder, wind direction rudder can constantly be swung with wind direction, until wind direction rudder is in downwind position, and not changed in wind direction In the case of maintain a metastable position；During wind direction rudder is swung along wind direction, wind direction rudder can drive and it The first cam disc being connected is rotated, and during the first cam disc box haul rudder is rotated, the first cam disc passes through cam disc Connecting rod drives the second cam disc synchronous axial system；During the first cam disc and the rotation of the second cam disc, roller is arranged on Roller in movement slots is rolled in the roller movement groove, because point different on roller movement groove relatively rotates shaft centre line Distance is differed, and is caused during roller rotates in roller movement groove, roller drives axle of the push rod along horizontal support bar main body Line direction is moved in push rod mounting hole, and then the claw being hinged by the push rod and push rod that are hinged with push rod drives blade to consolidate Fixed hoop and blade clips linking arm are rotated around the outer end of horizontal support bar；Because blade and blade clips are fixed by screw Together, and then blade is rotated with blade clips around the outer end of horizontal support bar, and then between blade string of a musical instrument relative wind velocity Angle constantly changes, i.e. the attack angle of blade box haul change of the blade attack angle changing device used for wind power generation of the embodiment of the present invention And change, the real-time regulation of attack angle of blade box haul is realized, the energy transformation ratio of wind power generation plant is improved, and in high wind When fast, the rotary speed of blade is reduced by changing its attack angle of blade, the stability of wind power generation plant is improved, is conducive to The a wide range of of wind power generating set with vertical shaft is promoted the use of.

Technical scheme is described in detail with specific embodiment below.

Fig. 1 is the overall structure figure of blade attack angle changing device used for wind power generation provided in an embodiment of the present invention.Fig. 2 is this hair The assembling structure schematic diagram for the blade attack angle changing device used for wind power generation that bright embodiment is provided.With reference to shown in Fig. 1, the present invention is implemented The blade attack angle changing device used for wind power generation of example, including blade 1, blade become angle of attack main body b and for blade 1 to be fixed on into blade The blade fixing device a become on angle of attack main body b.Example, with reference to shown in Fig. 1, the blade used for wind power generation of the embodiment of the present invention Attack angle changing device includes 5 blades, 1,10 blade fixing device a and 1 blade becomes angle of attack main body b, wherein, 5 blades are fixed The upper end that device a one end becomes angle of attack main body b with blade is connected, and upper end of its other end respectively with 5 blades 1 is connected, another 5 The lower end that blade fixing device a one end becomes angle of attack main body b with blade is connected, and its other end connects with the lower end of 5 blades 1 respectively Connect, i.e., the two ends of blade 1 are separately fixed at by the two ends that blade becomes angle of attack main body b by blade fixing device a, improve blade Become the intersubjective bonding strength of the angle of attack with blade.

With reference to shown in Fig. 2, blade fixing device a includes blade support device, for blade 1 to be fixed on into blade support dress The blade clips 2 put, blade support device includes blade clips linking arm 3, horizontal support bar 5, push rod mounting bracket 6, top Bar 18, push rod 19 and claw 20, wherein, blade clips 2 are connected with one end of blade clips linking arm 3, blade clips The end of the other end of linking arm 3 and horizontal support bar 5 is hinged, and push rod mounting bracket 6 is fixed on horizontal support bar 5, and the one of push rod 18 End is connected with one end of push rod 19, and the other end and the blade clips 2 of push rod 19 are hinged by claw 20；I.e. when the edge of push rod 18 During the length direction motion of horizontal support bar 5, push rod 19 can be driven to move, and then under the drive of push rod 19, blade clips 2 And the jointed shaft of blade clips linking arm 3 together between blade clips linking arm 3 and horizontal support bar 5 is rotated.

It should be noted that blade clips 2 with blade clips linking arm 3 by the way of being fixedly connected, i.e. blade Clips 2 and blade clips linking arm 3 can weld together or blade clips 2 and the connection of blade clips Arm 3 is integrally formed, and can also be that others can realize the connected mode being fixedly connected between the two, the embodiment of the present invention is to this Do not limit.

With reference to shown in Fig. 2, blade, which becomes angle of attack main body b, includes end cap 8, the first cam disc 9, blade erection support 10, roller Movement slots 11, rotary shaft upper bearing (metal) 12, rotary shaft 13, cam brace rod 14, rotary shaft lower bearing 15, the second cam disc 16, Roller 21 and mounting seat 17, wherein, the second cam disc 16 is arranged on the top of mounting seat 17, and the lower end of rotary shaft 13 is fixed In mounting seat 17, rotary shaft lower bearing 15 is arranged in the centre bore of the second cam disc 16, and the lower end of rotary shaft 13 is set In the centre bore of rotary shaft lower bearing 15, i.e. the second cam disc 16 can rotate around the center line of rotary shaft 13；Cam disc connects The lower end of extension bar 14 is fixed on the second cam disc 16, and the upper end of cam brace rod 14 is fixed on the first cam disc 9, rotary shaft Upper bearing (metal) 12 is arranged in the centre bore of the first cam disc 9, and the upper end of rotary shaft 13 is arranged on the center of rotary shaft upper bearing (metal) 12 In hole, i.e. the first cam disc 9 can rotate around the center line of rotary shaft 13, and blade support device is fixed on blade erection support 10 On.

It is preferred that, mounting seat 17 and rotary shaft 13 are installed with one heart, example, and rotary shaft 13 may be mounted at mounting seat In 17 centre bore, therefore, the first cam disc 9 and the second cam disc 16 can also rotate around the center line of mounting seat 17.

It should be noted that the fixed form between the lower end of rotary shaft 13 and mounting seat 17, the embodiment of the present invention is not Specific restriction is done, example, the lower end of rotary shaft 13 can be welded in mounting seat 17, certainly, be only to illustrate herein Bright, the fixed form between the lower end of rotary shaft 13 and mounting seat 17 can also be other fixed forms outside welding.

Secondly, it is necessary to which explanation, the first cam disc 9 and the second cam disc 16 are fixed on one by cam brace rod 14 Rise, for the connected mode between the first cam disc 9 and cam brace rod 14 and the second cam disc 16 and cam brace rod Connected mode between 14, the embodiment of the present invention is not limited, example, and the lower end of cam brace rod 14 can be welded on second On cam disc 16, the first cam disc 9 can be welded on the upper end of cam brace rod 14, i.e. the first cam disc 9 and the second cam Disk 16 can around rotary shaft 13 center line under the connection of cam brace rod 14 synchronous axial system.

With reference to shown in Fig. 2, roller movement groove 11, roller movement are provided with the first cam disc 9 and the second cam disc 16 Roller 21 is provided with groove 11, roller 21 is connected with push rod 18.

Further, with reference to shown in Fig. 2, the first cam disc 9 is identical with the structure of the second cam disc 16, the He of the first cam disc 9 Second cam disc 16 is symmetrically installed, namely the first cam disc 9 and the second cam disc 16 are installed after fixing, the rolling that its surface is set Sub- movement slots 9 are located at its surface away from cam brace rod 14.First cam disc 9 and the second cam disc 16 are symmetrically installed, can With in the case where ensureing the first cam disc 9 and the normal work of the second cam disc 16, by the first cam disc 9 and the second cam disc 16 Be arranged to identical structure, and surface sets the roller movement groove 11 of same profile, so reduce cam disc processing cost and The setting difficulty of roller movement groove.

With reference to shown in Fig. 2, the upper end of cam brace rod 14 is just consolidated with the first cam disc 9 to the surface of roller movement groove 11 Fixed connection, the lower end of cam brace rod 14 is just fixedly connected with the second cam disc 16 to the surface of roller movement groove 11, and first The cam disc 16 of cam disc 9 and second can under the driving of wind direction rudder 22 around rotary shaft 13 central axis synchronous axial system.

It should be noted that roller 21 be arranged on roller movement groove 9 in, i.e., roller 21 can in roller movement groove 9 edge The profile of roller movement groove is rolled, namely roller 21 cooperates with roller movement groove 9, concrete structure for roller 21 and Specific mounting means of the roller 21 in roller movement groove 9, the embodiment of the present invention is not specifically limited.

With reference to shown in Fig. 2, the blade attack angle changing device used for wind power generation of the embodiment of the present invention also includes wind direction rudder 22 and end Lid 8, wherein, wind direction rudder 22 is fixed on the surface of the first cam disc 9, i.e. the first cam disc 9 can be under the drive of wind direction rudder 22 Center line around rotary shaft 13 rotates.For the fixed form between the cam disc 9 of wind direction rudder 22 and first, the embodiment of the present invention is not It is specifically limited, example, wind direction rudder 22 can be welded on the first cam disc 9.End cap 8 is arranged on blade erection support 10, Specifically, rotary shaft 13 is arranged in the centre bore of blade erection support 10, end cap 8 is arranged on the upper end of rotary shaft 13, is used for It is used for the centre bore for installing rotary shaft 13 on sealing blade erection support 10, prevents rainwater and dust along blade erection support 10 Centre bore enters in gap between rotary shaft 13 and rotary shaft upper bearing (metal) 12, improves rotary shaft 13 and rotary shaft upper bearing (metal) 12 Working life.

It should be noted that the wind direction rudder 22 of the embodiment of the present invention is slab construction, the axis and rotary shaft of wind direction rudder 22 13 axis is all the time in a plane, i.e., wind direction rudder 22 is vertically installed on the first cam disc 9.Specifically, wind direction rudder 22 is perpendicular Directly it is welded on the first cam disc 9.

With reference to shown in Fig. 5, horizontal support bar 5 includes horizontal support bar fixed part 5.1, horizontal support bar main body 5.2, blade clips Linking arm connecting portion 5.3 and the neck 5.4 for installing blade clips linking arm 3, wherein, horizontal support bar fixed part 5.1, branch Support straight-bar main body 5.2, blade clips linking arm connecting portion 5.3 and neck 5.4 can be integrally formed processing, can also individually add Weld together after work, the embodiment of the present invention is not limited this, wherein, it is preferred that horizontal support bar fixed part 5.1, support are straight Bar main body 5.2, blade clips linking arm connecting portion 5.3 and neck 5.4 can be integrally formed processing, be integrally formed the branch of processing Support straight-bar structural strength high, functional reliability is high.

With reference to shown in Fig. 5, horizontal support bar fixed part 5.1 is that hollow structure, i.e. horizontal support bar fixed part are socketed in blade peace Fill on bearing 10, then horizontal support bar 5 is fixed on blade erection support 10 by the second fixing bolt 7, blade clips The one end of linking arm 3 away from blade 1 is plugged in neck 5.4, blade clips linking arm 3 and the connection of blade clips linking arm Portion 5.3 is hinged by the first fixing bolt 4, i.e., blade clips linking arm 3 can around the first fixing bolt 4 center line it is relative Horizontal support bar 5 is rotated.

With reference to shown in Fig. 6, horizontal support bar mounting hole 6.1, push rod mounting hole 6.4 are provided with push rod mounting bracket 6 and is fixed With through hole 6.3, it is a circular ring structure that push rod, which installs frame body 6.2, wherein, horizontal support bar mounting hole 6.1 is arranged on annulus Center, horizontal support bar 5 is fixed in horizontal support bar mounting hole 6.1, and the diameter of horizontal support bar mounting hole 6.1 is less than horizontal support bar The diameter of 5 main bodys, push rod 18 is arranged in push rod mounting hole 6.4, and the diameter of push rod 18 is less than the diameter of push rod mounting hole 6.4, I.e. push rod mounting bracket 6 is fixed on horizontal support bar 5 by the 3rd fixing bolt 24, while push rod 18 can be in push rod mounting hole Moved inside 6.4 along the axis direction relative support straight-bar 5 of horizontal support bar 5.

With reference to shown in Fig. 2, roller 21 is with push rod 18 by pin-hinges, and push rod 18 passes through pin-hinges, top with push rod 19 Bar 18 can be moved along the axis direction of the main body of horizontal support bar 5.

With reference to shown in Fig. 7, claw 20 is U-shape structure, one end of claw 20 with push rod 19 by pin-hinges, claw 20 U-shaped inner surface is in contact with the outer surface of blade clips linking arm 3, and the U-shaped inner surface of claw 20 is connected with blade clips Arm 3 is riveted by rivet 25.

Optionally, with reference to shown in Fig. 2, blade 1 is fixed with blade clips 2 by screw 23, i.e., using screw 23 by leaf Piece 1 and blade clips 2 are fixed together.

It should be noted that the blade attack angle changing device used for wind power generation of the embodiment of the present invention include 5 blades 1,10 Blade fixing device a and 3 cam brace rods 14, its center line of Leaf 1 along rotary shaft 13 are uniformly arranged, and cam disc connects Center line of the extension bar 14 along the first cam disc 9 is uniformly arranged, can by the way that blade 1 is uniformly arranged on one week of rotary shaft 13 To ensure the wind power generation plant of the embodiment of the present invention during work, the uniform force of rotary shaft 13 improves rotary shaft 13 Job stability and reliability.

It is the structural representation of the first cam disc 9 of the embodiment of the present invention shown in Fig. 8, due to provided in an embodiment of the present invention The structure of second cam disc 16 is identical with the structure of the first cam disc 9, and the embodiment of the present invention is herein no longer to the second cam disc 16 Structure do it is tired state, specifically may be referred to the structure of the first cam disc 9.With reference to shown in Fig. 8, it is provided with the first cam disc 9 Roller movement groove 11, the eccentric setting of 11 and first cam disc of roller movement groove 9, wherein roller movement groove 11 is by multi-section circular arc group Into the concrete shape (i.e. the profile of roller movement groove 11) of roller movement groove 11 is obtained according to reversal process.Need explanation It is that the process of the profile of the roller movement groove 11 of the embodiment of the present invention is obtained according to reversal process, the embodiment of the present invention is not limited Stated with tired, those skilled in the art refer to prior art and are configured.

It should be noted that the angle of attack of the blade of the embodiment of the present invention is between the string of a musical instrument of blade and the direction of relative wind velocity Angle, the established angle of blade is the angle between the tangent line of any on blade rotational circle and the string of a musical instrument of blade.Due to this hair The profile of the roller movement groove 11 of bright embodiment is drawn according to reversal process, when wind is to its wind direction rudder, and wind direction rudder can be with Wind direction constantly to swing, until wind direction rudder is in downwind position, and maintain in the case where wind direction does not change one Metastable position；During wind direction rudder is swung along wind direction, wind direction rudder can drive the first coupled cam disc Rotate, during the first cam disc box haul rudder is rotated, the first cam disc drives the second cam by cam brace rod Disk synchronous axial system；During the first cam disc and the second cam disc synchronous axial system, the roller in roller movement groove is arranged on Roll, because the distance that point different on roller movement groove relatively rotates shaft centre line is differed, lead in the roller movement groove During cause roller is rotated in roller movement groove, roller drives axis direction of the push rod along horizontal support bar main body to pacify in push rod Fill in hole and move, and then the claw drive blade clips and blade that are hinged by the push rod that is hinged with push rod, with push rod are fixed Linking arm is bound round to rotate around the outer end of horizontal support bar；Because blade and blade clips are fixed by screws in together, Jin Erye Piece is rotated with blade clips around the outer end of horizontal support bar, and then the angle between the blade string of a musical instrument and relative wind velocity constantly occurs Change, i.e., roller around roller movement groove profile roll during, enable to the established angle moment of blade 1 to become Change, namely the attack angle of blade box haul of the blade attack angle changing device used for wind power generation of the embodiment of the present invention changes and changed, and realizes The real-time regulation of attack angle of blade box haul, improves the energy transformation ratio of wind power generation plant, and in high wind speed, by changing Become the rotary speed that its attack angle of blade reduces blade, improve the stability of wind power generation plant, be conducive to vertical-shaft wind The a wide range of of TRT is promoted the use of.

Simultaneously as the blade attack angle changing device used for wind power generation of the embodiment of the present invention, is provided with two symmetrically peaces The cam disc of structure identical first and the second cam disc of dress, and the first cam disc and the second cam disc connected by cam disc Bar is fixed together, and realizes the synchronous axial system in the case where wind direction rudder straps are dynamic of the first cam disc and the second cam disc, and then passes through In the presence of the roller, push rod and the push rod that are connected respectively with the first cam disc and the second cam disc, at the same change blade upper end and The angle of attack of lower end, the i.e. embodiment of the present invention are adjusted simultaneously by the cam disc of symmetrical arrangement identical first and the second cam disc The angle of attack of completeblade top and bottom, improves the structural stability and reliability during adjustment attack angle of blade, while also protecting The accuracy demonstrate,proved the attack angle of blade box haul change of the blade attack angle changing device used for wind power generation of the embodiment of the present invention and changed, The further energy transformation ratio and structural reliability for improving wind power generation plant.

Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology The scope of scheme.

Claims (10)

1. a kind of blade attack angle changing device used for wind power generation, it is characterised in that the blade attack angle changing device bag used for wind power generation Include blade, blade and become angle of attack main body and for the blade to be fixed on into the blade fixation dress that the blade becomes in angle of attack main body Put, the blade fixing device includes blade support device, for the blade to be fixed on the blade support device Blade clips, the blade support device includes blade clips linking arm, horizontal support bar, push rod mounting bracket, push rod, push rod And claw, the blade clips are connected with the blade clips linking arm, the blade clips linking arm and the branch Support straight-bar is hinged, and the push rod mounting bracket is fixed on the horizontal support bar, and the push rod is connected with the push rod, described to push away The other end of bar is hinged with the blade clips by the claw；The blade become angle of attack main body include end cap, it is first convex Wheel disc, blade erection support, roller movement groove, rotary shaft upper bearing (metal), rotary shaft, cam brace rod, rotary shaft lower bearing, Two cam discs, roller and mounting seat, the rotary shaft are arranged in the mounting seat, and the rotary shaft lower bearing is arranged on The lower end of the rotary shaft, the rotary shaft lower bearing is arranged in the centre bore of second cam disc, and the cam disc connects The lower end of extension bar is fixed on second cam disc, and the upper end of the cam brace rod is fixed on first cam disc, institute State rotary shaft upper bearing (metal) to be arranged in the centre bore of first cam disc, the upper end of the rotary shaft is arranged on the rotary shaft In the centre bore of upper bearing (metal), the blade support device is fixed on the blade erection support；First cam disc and institute The upper end for stating blade is connected by the blade fixing device, and the lower end of second cam disc and the blade passes through described Blade fixing device is connected, and first cam disc is identical with the structure of second cam disc, first cam disc and Second cam disc is symmetrically installed, and is provided with first cam disc and second cam disc described in profile identical The roller is provided with roller movement groove, the roller movement groove, the roller is connected with the push rod.

2. blade attack angle changing device used for wind power generation according to claim 1, it is characterised in that the leaf used for wind power generation Piece attack angle changing device also includes wind direction rudder, and the wind direction rudder is fixed on first cam disc, the cam brace rod Upper end is just fixedly connected with first cam disc to the surface of the roller movement groove, the lower end of the cam brace rod with Second cam disc is just fixedly connected to the surface of the roller movement groove, first cam disc and second cam disc The synchronous axial system under the driving of the wind direction rudder.

3. blade attack angle changing device used for wind power generation according to claim 2, it is characterised in that the end cap is arranged on institute State on blade erection support, first cam disc and second cam disc, can be around institutes under the driving of the wind direction rudder State the central axis synchronous rotary of rotary shaft.

4. blade attack angle changing device used for wind power generation according to claim 2, it is characterised in that the horizontal support bar includes Horizontal support bar fixed part, horizontal support bar main body, support arm blade clips linking arm connecting portion and fixed for installing straight-arm blade The neck of linking arm is bound round, the horizontal support bar fixed part is hollow structure, and the straight-arm blade clips linking arm is away from blade One end be plugged in the neck, the blade clips linking arm and the blade clips linking arm connecting portion pass through One fixing bolt is hinged.

5. blade attack angle changing device used for wind power generation according to claim 2, it is characterised in that on the push rod mounting bracket Horizontal support bar mounting hole, push rod mounting hole and fixation through hole are provided with, the horizontal support bar is fixed on the horizontal support bar peace Fill in hole, the diameter of the horizontal support bar mounting hole is less than the diameter of the horizontal support bar main body, the push rod is arranged on described In push rod mounting hole, the diameter of the push rod is less than the diameter of the push rod mounting hole.

6. blade attack angle changing device used for wind power generation according to claim 2, it is characterised in that the roller and the top Bar by pin-hinges, the push rod and the push rod by pin-hinges, the push rod can along the horizontal support bar axle Move in line direction.

7. blade attack angle changing device used for wind power generation according to claim 2, it is characterised in that the wind direction rudder is flat board Structure, the axis of the wind direction rudder and the axis of the rotary shaft are all the time in a plane, and the wind direction rudder is welded on described On first cam disc.

8. the blade attack angle changing device used for wind power generation according to any one of claim 1~7, it is characterised in that the card Pawl is U-shape structure, and one end of the claw passes through pin-hinges, U-shaped inner surface and the leaf of the claw with the push rod The outer surface of piece clips linking arm is in contact, and the U-shaped inner surface passes through rivet with the blade clips linking arm.

9. blade attack angle changing device used for wind power generation according to claim 8, it is characterised in that the blade and the leaf Piece clips are fixed by screw, and the horizontal support bar fixed part is solid by the second fixing bolt with the blade erection support It is fixed.

10. blade attack angle changing device used for wind power generation according to claim 8, it is characterised in that described used for wind power generation Blade attack angle changing device includes 5 blades, 10 blade fixing devices and 3 cam brace rods, the blade It is uniformly arranged along the center line of the rotary shaft, center line of the cam brace rod along the rotary shaft is uniformly arranged, institute Blade fixing device is stated to connect respectively at the upper end of the blade and the lower end of the blade.